[ 1967.333633][ T7012] br0: port 1(dummy0) entered blocking state
[ 1967.333832][ T7012] br0: port 1(dummy0) entered disabled state
[ 1967.333997][ T7012] dummy0: entered allmulticast mode
[ 1967.335236][ T7012] dummy0: entered promiscuous mode
[ 1967.358557][ T7013] br0: port 1(dummy0) entered blocking state
[ 1967.358943][ T7013] br0: port 1(dummy0) entered forwarding state
[ 1969.345952][   T70] dummy0: left allmulticast mode
[ 1969.346780][   T70] dummy0: left promiscuous mode
[ 1969.347014][   T70] br0: port 1(dummy0) entered disabled state